Bill,
First you need to perform UT to AWS D1 to your written procedure. This needs to be written to cover SS if that is your intent. Secondly, per D1.6 6.17 (99) cal block shall be same base metal and heat treat as material in production. Next, D1.6 uses a dac curve and weld discontinuity characterization (spherical, cylindrical, or planer). Welds are also set into classes static, cyclical, class R, and class X like D1.1. hope this is what you were looking for.